LZ Red Silo is an ammonia-soaked dead valley where a human colony’s terrain has been overtaken by Blood-Braid groves, buried cysts, acid guano, and nocturnal fliers. A sapper platoon is sent in to clear a two-hundred-meter landing circle for a medical evac shuttle from Research Station Kestrel.

The job looks simple on paper: burn the pillars, cut the stems, grade the ground, and set charges before the shuttle arrives at dawn. But the Blood-Braids answer every tool with another kind of pressure — flame makes them grip harder, machines are crushed from below, severed chunks begin to regrow, and living mucilage clogs respirators from the inside.

Then night opens the crowns. Silent fliers descend from the groves, shear scalps, open neck veins, and keep soldiers alive as blood farms while the roots close the escape route and the filters fail.

This is "Red Silo" by Sascha Schmidt

A once-flourishing farming and refinery colony on a gas giant’s moon has become an expanding infested dead-zone. The enemy threatening the human colonists is not a creature soldiers can simply target and kill.

The soldiers named it Stonegrinder — a massive alien siege organism that moves through cities like living geology. Anything it touches is broken down, separated, and digested into useful nourishment. What the organism cannot use remains behind as petrified grotesque statues of its former living form.

The Stonegrinder does not just kill people. It turns buildings into breeding chambers, seals corridors like throats, digests bodies into raw material, and spreads smaller scouts through vents, shafts, and broken rooms. Once it takes even an inch of colony ground, that ground is lost and wasted forever. Retreat — even tactical retreat — stops being an option when the dead-zone threatens to swallow the colony.

Deep inside the infected hab-stack is Node Seven, a breeding heart large enough to grow another Stonegrinder if it survives.

A breacher cell is sent in with plasma cutters and thermobaric charges to destroy it before the main mass shifts north and swallows the next colony district.

The soldiers are briefed as if they are fighting something half slime, half stone — but the Stonegrinder has many unseen ways to kill.

This is "Retreat is Contamination" by Sascha Schmidt.

A troop carrier has crashed into a bone-colored dust basin on a hostile colony world, its three-kilometer hull split open and half-buried in saltstone.

Inside the wreck is a navigational core holding the last clean vector to a hidden human fleet tender — and the enemy wants it before orbital sterilization erases the site.

A combat engineer team enters the tilted hulk to reach the forward bridge vault, but the ship is no longer just wreckage. The Groutbacks — alien centipedes armored like tanks and almost as long as two men — have turned its decks into a breathing brood nest, undermining floors, carving kill pits, sealing corridors with resin, and packing load-bearing walls with eggs.

By the time the team reaches the vault, the core is no longer just an objective.

This is "The Living Wreck" by Sascha Schmidt

After a human battlefield collapses on a hostile colony world, a damaged flatbed carries wounded soldiers away from the front through an alkaline hardpan basin. The route is marked clear, but it crosses shatter-beak territory — uncharted alien beasts big enough to charge vehicles, break armor, and feed on humans.

The transport is almost defenseless: one injured engineer at point, a failing exosuit, a damaged track assembly, and men in the cargo bed who cannot fight back.

This is "The Hardpan Corridor" by Sascha Schmidt

Choke is a mining world of shale flats, refinery stacks, and old mag-lev ore lines built to drag extraction cargo out of the western fields.

Nineteen months ago, the ore-rich tunnel was lost. The Rams are still down there — eyeless, thick-skulled alien beasts that batter through rock, crush bodies, and turn solid ground into a trap. Everyone knows the collapsed bore is dangerous. Everyone knows what waits below. But the Authority wants the ore line back, and greed has finally become stronger than caution.

So they send penal sappers into the dark as human ballast — minefield dogs in stripped-down exoframes, heavy enough to test the ground and disposable enough to lose.

Their orders are simple: advance to the collapse point, survey the breach, drive stabilizer pylons, and seal the fractures so the route can be restored.

What reads easy in a brief gets a different shape in the depth of the alien tunnels of the Rams...

This is "Human Ballast" by Sascha Schmidt.

A tidal reservoir basin lies beneath the shadow of a gas giant, built to control floodwater and protect the colony’s low coastal settlements. Now the basin floor has dried into cracked clay, old concrete, and dead floodgate pylons — and the Stinger Grove, an aggressively growing alien pest, has rooted through all of it.

The Grove is not a forest, but a living minefield of wooden spires, black mucus mats, invisible neurotoxic darts, falling fronds, and buoyant seed structures. It paralyzes soldiers, swallows bodies into the ground, regenerates from torn fragments, and spreads with every tide that reaches the coast.

A small sapper team enters the basin to plant plasma-core charges at Pylons Four through Seven and collapse the upstream floodgates before the Grove can expand again.

This is “The Stinger Grove” by Sascha Schmidt.

Terminus 9 is an underground transit and freight hub buried beneath the old colony district, built to move cargo, people, and emergency supplies below the water table. Now the valleys above it have turned into sulfidic bog, and the abandoned station below has become a subterranean forest of Sourstacks. The Sourstacks are alien fungal towers rooted through the wet infrastructure, coating the concrete with hooked biofilm, corrosive sludge, spores, and lethal gas.

A small sapper team is sent down into Terminus 9 to recover two hundred anti-toxin ampules from a sealed medical vault before the poisoned battalion on the ridge collapses. Every movement through the hub becomes a contact hazard: flooded corridors, failing seals, black sludge, and touch-sensitive biofilm leave no room for mistakes.

When the extraction cable snaps and fouls inside the growth, the team is forced off the planned route and into a drainage conduit barely wide enough to crawl through.

This is "Poisoned Terminus" by Sascha Schmidt

On a volcanic colony world, atmospheric processor towers were built to scrub ash and glass-sleet from the evacuation lanes so shuttles could land and lift off through the poisoned sky.

Now the ridge-hatchets have taken the high ground. These giant predatory birds nest inside towers, sensor masts, and ventilation shafts, blinding the colony’s systems while using cloud cover and vertical terrain to kill anything moving below.

Firebase Anvil is trapped under the ash ceiling, its evacuation window closing. A combat engineer team crosses an ash-choked ravine to restart Spire Seven and clear the lane. But inside the processor, the ridge-hatchets have packed the vents with nests made from stick, cable, animal remains, military kit, and human limbs — and the adult bird is still above them, listening through the tower.

This is "The Bone Yard" by Sascha Schmidt

I would lock this version. It has the right movie intro shape: world purpose → predator occupation → trapped humans → mission → horror object → unresolved threat.

Drop-Leviathans are giant space-born organisms. At the end of each life-cycle, one falls from orbit and becomes the seed of a new reef colony — a living mass that will one day send mature Leviathans back into space to seed more worlds.

One has crashed onto an acid-rain salt-pan colony, home to thousands of human settlers. Its carcass destroyed the colony landing pad and now lies near the city like a rotting mountain, full of eggs and larvae waiting for the right moment to spread, take the planet, and grow another Leviathan.

A sapper team enters the Drop-Leviathan husk to collapse it, along with the wreckage of the old landing pad, before its eggs can scatter.

But the creature’s dead tissue still reacts to vibration, punching jaw-stalks through walls, floors, and ceilings whenever something moves.

Every step, shot, cutter spark, and detonation pulse can wake another part of the corpse.

This is “The Dead Leviathan” by Sascha Schmidt.

On a hostile volcanic badlands colony, geothermal processing stacks — ceramic and alloy filtration towers — dot the ash plain. They were designed to filter sulfuric particulates, but when a hygiene protocol error lets unchecked containers reach the surface, an aggressive species of fist-sized alien ants attacks the colony.

The stack-towers are warm, sealed, and perfect places to breed. Our story begins when the ants have already invaded half the colony, and the situation is no longer classified as a biological hazard, but as a biological infestation consuming critical infrastructure.

A sapper team enters Stack 7 to recover a tactical datastore and stop the ants before they reach the next filtration stacks.

But the ants do not only kill people — they convert machines, weapons, wounded soldiers, and living bodies into hive material.

This is “The Wax Ants of Stack 7” by Sascha Schmidt.